Read Only File Attribute representation

Hi There

Is there a way to represent read only files in a different/specific way?

Someone helped me here display compressed files in a different colour.
This is shown in this screenshot:

I want to show read only files in some distinctive way...

Searched with these fields:
"read only"
"attributes"

You can show a column with the attributes (and then look for files with "r" set) but I don't think you can colour things based on the read-only attribute like you can the hidden/system/encrypted ones.